Free Hot Water: The Suntap Solar Water Heater

Austria-based industrial design consultancy Salz designed this solar water heater for emerging markets. While conducting research in an impoverished area of Mexico, Salz learned that residents were scraping by with two different sources of heat, and suffering for it: "Most families we talked to had gas stoves for quick meals and reheating. The stoves were not used for daily cooking due to the high cost of gas. Outside wood fireplaces were used for cooking tortillas, beans and to heat...